What does the Ideal dU fault code mean?

Your boiler has paused because a valve is stuck halfway, which usually happens during a specific service check or test mode.

How much does it cost to fix Ideal error code dU?

Cost varies. Contact a Gas Safe registered engineer for a quote.

Ideal dU Fault Code: What It Means & How to Fix It

What the manual says

Manufacturer manual

DIVERTER VALVE IN MID-POSITION FOR SERVICE ROTATE KNOBS FULLY CLOCKWISE TURN POWER OFF AND ON RESTART BOILER

Shared across the i-mini range

This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s manual.

DIY fix possible

Locate the hot water and heating temperature knobs on the front of your boiler.Rotate both knobs fully clockwise (all the way to the right).Turn the boiler power off at the fused spur, wait a few seconds, and turn it back on to restart the system.

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Boiler cover options

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A cover plan would handle faults like dU: no call-out fees, no surprise bills.

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All 18 fault codes on the i-mini C24 / C30

Seeing a different code? Every code this model can display, in one place.

F1 F2 or Fn or Ln F3 F4 OR L4 F5 OR L5 F6 F7 F9 or L9 or F8 or L8 FA FU L 2 L1 L2 L4 or F4 L5 or F5 L6 LC

Your boiler has paused because a valve is stuck halfway, which usually happens during a specific service check or test mode.

What the manual says

DIY fix possible

Avoid the next call-out bill

All 18 fault codes on the i-mini C24 / C30

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